Folding drawing pen



L. ZWENG.

FOLDING DRAWING PEN. APPLICATION mm MAY28, 1920 Patented Aug. 15,1922.

LUDWIG zwnne, or rriton'rnm'smnmlaomlGER A TY.

FOLDING DRAWIN PEN; j

Specification of Letters Patent Application filed May 28,1920? serial Jae/385,009.

(GRANTED UNDER. 'THE PROVISIONS or THE ACT OF MARCH 3, 1921, 41 STAT. n, 1313. vi

To all whom-it may concern Be it known that I, LUDWIG dent of Pfronten-Steinach, Bavaria, Germany, have invented certain new and useful Improvements in Folding Drawing Pens,

(for which I have filed application for patent in Germany, under date of December 20, 1918, Patent-No. 320,545), of whlch the blade is held in an uplifted position as well as in such readyfor use by means of a spring-,1 as are. already known.

The new characteristic featureof my invention consists therein that an elastic tongue is produced by means of a slitting on the rigid pen-blade so that. a special spring is thereby dispensed with.

The accompanying drawing shows my invention in side-view.

The movable lover a of said drawing pen ZWENd, a citizen of the German Republic, and resito a folding I is Mar i. {e upliftably lodged in the. well-known manner at b on the rigid lever: 0. Belowthe pivot b isthe elastic tongue 7 produced by the'slitting of the'rigid 'lever'c I whichtongue. abuts against the nose e of I the movable lever a holding it Having now described my "nvention what I'claim as new and desire toseo ure-by I 1 Letters Patentis:--

i A drawing pen having afixe'd blade; provlded at its inner end, on itsouter side with I a spring tongue, anda pivoted bladethe innerend of which, has edges arranged at an angle'to each othe'r'and also arranged to TI bear on said spring'tongueto hold said Ipiv- 5 I oted blade in either open or closed posit1on.. In testimony whereoi I have hereunto 40 7 signed my'name this 'Gthday of March 1920,

in the presence of two.,subscribing witnesses."

LUDWIG ZWENG; Witnesses! i PAUL DREY, I

MARIANNE FLUMANN."

' Patented Aug;15 .1922; I 

